But that should very much be possible with Haswell. The lawyers are looming, so there's an awful lot of NDA material on Haswell I can't quite divulge.

But Intel has gone on the record to say that Haswell is the biggest leap in power efficiency in its history. Bigger even than the jump from Pentium 4 to Intel Core. If true, that's pretty epic.

Already, Intel is pushing the power envelope with 7 watt versions of the existing Ivy Bridge architecture. OK, that's using Intel's dodgy new Scenario Design Power rating rather than the TDP gold standard. But we must surely be talking low single digits SDP for Haswell.

Graphics tab

Then there's Intel's new Haswell graphics. Happily, Intel hasn't revealed the full details here, even under NDA. Ironically, that actually gives us a freer hand.

The graphic core count leaps from 16 to 40 units and the top version gets 128MB of embedded eDRAM. Basically, Haswell graphics are going to be much, much faster, which can only be a good thing for that full-on PC experience in a tablet.

Given that existing Ivy Bridge chips are tantalisingly close to being suitable for tablets, I'll go ahead and predict that Haswell in a tablet is going to be awesome.

Convergence conundrum

Personally, I have no interest in dragging around both a laptop and tablet when I'm on the road. But that's exactly what I have to do currently if I want both the full x86 experience and a sleek touch device for more casual computing concerns.

Yup, I've flirted with the idea of ditching Windows for Android or iOS when on the move. But my thought process always weaves back to the same conclusion. If I could have Windows 8 in a proper tablet device, that's what I want.

In other words, it's the hardware, not the software, that has so far prevented me from dropping my laptop for a Windows tablet. And Haswell very much looks like the enabler for getting me over the hump.